Method for integrally forming C sandwich panel antenna housing

A flat-panel antenna and integrated technology, applied in the field of radome, can solve the problems of increasing cost and increasing the number of tanks, and achieve the effect of ensuring smoothness, reducing production cost and less operation steps

Inactive Publication Date: 2021-04-02
JIANGSU XINYANG NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The skin needs to be formed in advance when bonding and forming. At the same time, if a product with a more complex shape is encountered, multiple sets of molds need to be opened, and the number of times of entering the tank will increase, which will greatly increase the cost.

Method used

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  • Method for integrally forming C sandwich panel antenna housing
  • Method for integrally forming C sandwich panel antenna housing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A method for integrally forming a C-sandwich flat-panel radome, comprising the steps of:

[0034] (1) Prepreg preparation: use the CPD module of Catia software to make the blanking diagram of the skin layer, and then use the automatic blanking machine to cut the prepreg sheet according to the blanking diagram; and the prepreg The material is a mixture of glass fiber or quartz fiber and epoxy resin or cyanic acid resin or double horse resin;

[0035](2) Mold pretreatment: Clean the mold with gasoline first, then wash it with acetone for 3 times, remove the mold oil seal, then confirm that the molding surface of the mold is not damaged, and finally confirm the engraved line, and spray Loctite on the mold before each use 770-NC mold release agent (spray 8-10 times for new molds, 3-5 times for used molds, 10-15 minutes between each spraying, ensure that the mold release agent sprayed last time is cured and dry before spraying the next time) ;

[0036] (3) Paving the outer...

Embodiment 2

[0043] A method for integrally forming a C-sandwich flat-panel radome, comprising the steps of:

[0044] (1) Prepreg preparation: use the CPD module of Catia software to make the blanking diagram of the skin layer, and then use the automatic blanking machine to cut the prepreg sheet according to the blanking diagram; and the prepreg The material is a mixture of glass fiber or quartz fiber and epoxy resin or cyanic acid resin or double horse resin;

[0045] (2) Mold pretreatment: Clean the mold with gasoline first, then wash it twice with acetone, remove the mold oil seal, then confirm that the molding surface of the mold is not damaged, and finally confirm the engraved line, and spray Loctite on the mold before each use 770-NC mold release agent (spray 8-10 times for new molds, 3-5 times for molds after use, with an interval of 10-15 minutes between each spray, and ensure that the mold release agent sprayed last time is cured and dry before spraying the next time );

[0046]...

Embodiment 3

[0053] A method for integrally forming a C-sandwich flat-panel radome, comprising the steps of:

[0054] (1) Prepreg preparation: use the CPD module of Catia software to make the blanking diagram of the skin layer, and then use the automatic blanking machine to cut the prepreg sheet according to the blanking diagram; and the prepreg The material is a mixture of glass fiber or quartz fiber and epoxy resin or cyanic acid resin or double horse resin;

[0055] (2) Mold pretreatment: Clean the mold with gasoline first, then wash it with acetone for 3 times, remove the mold oil seal, then confirm that the molding surface of the mold is not damaged, and finally confirm the engraved line, and spray Loctite on the mold before each use 770-NC mold release agent (spray 5-10 times for new molds, 3-5 times for molds after use, with an interval of 10-15 minutes between each spray, and ensure that the mold release agent sprayed last time is cured and dried before spraying the next time ); ...

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PUM

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Abstract

The invention discloses a method for integrally forming C sandwich panel antenna housing. The method comprises the following steps: (1), preparing prepregs; (2), carrying out die pretreatment; (3), laying and pasting an outer skin; (4), laying and pasting honeycombs and a middle skin; (5), laying and pasting honeycombs and an inner skin; (6), curing; (7), demolding; and (8), machining and formingholes. According to the method for integrally forming the C sandwich panel antenna housing is simple; mixed materials with glass fibers or quartz fibers and epoxy resin or cyanic acid resin or bismaleimide resin are used as prepregs; aramid paper honeycombs and same-system adhesive films are used as main raw materials; a pre-compaction step is added after the skins are laid and pasted; bubbles among the prepregs are completely eliminated; meanwhile, resin fusion is more sufficient; curing is carried out after three layers of skins and two layers of honeycombs are laid and pasted; the thermal expansion coefficients of the prepregs are consistent; the stress in the curing process is small; the planeness of the panel antenna housing can be guaranteed; the method has few operation steps; the usage of autoclaves can be reduced; the energy consumption is reduced; and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of radome, in particular to a method for integrally forming a C-sandwich flat radome. Background technique [0002] The radome is the window of electromagnetic waves. Its function is to protect the antenna and prevent the environment from affecting and interfering with the working state of the radar antenna, thereby reducing the power to drive the antenna, improving its working reliability, and ensuring the radar antenna works around the clock. Among them, the sandwich structure is a widely used form of radome, which has been widely and maturely applied in aerospace, and has the characteristics of high specific strength, high specific stiffness and high energy absorption capacity. [0003] Sandwich structure radome has A-type sandwich and C-type sandwich. For large-scale flat sandwich radome, its molding methods include glue bonding, co-gluing and co-curing. In order to solve the problem of flatness, glue is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/34B29C70/54B29C33/72B29C33/58B29L31/34
CPCB29C70/342B29C70/54B29C70/545B29C33/72B29C33/58B29L2031/3456
Inventor 张林张兰张彬潘国祥周炳昕蒋韬李俊
Owner JIANGSU XINYANG NEW MATERIALS CO LTD
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